Power-head



P. A. MYERS.

POWER HEAD.

APPLICATION FILED EEK-12, 1920.

1,367,075. Patented Feb.1,1921.

2 SHEETS-SHEET 1.

Jrwembr P. A. MYERS.

POWER HEAD.

APPLICATION FILED FEB. 12. 1920.

1,367,075. PatentedFeb. 1,1921.

2 SHEETSSHEET 2- Jlwrubr PIN/ 611] yero,

WW @mzm UNI ED sures PATENT omen.

IPI-IIL'IIP A. M! m, 01 ASHLAND, OHIO, ASSIGNOB TO I. E. MYERS AND ASHLAND, OHIO, A COIPARTNEBSHIP CONSISTING OF FRANCIS E.

PHILIP A. MYERS.

alumina, or 1mm AND POWER-HEAD.

Specification of Letters Patent.

Patented Feb. 1, 1921.

Application filed February 12, 1920. Serial No. 358,021.

To all whom it may cmwem:

Be it known that I, PHILIP A. Mamas, a citizen of the United States, residm at Ashland in the county of Ashland and tate of Ohio, have invented certain new and use ful Improvements, in Power-Heads, of which the following is a specification, reference being had therein to the accompanying drawing. a

This invention relates to powerheads and has for its object to provide an improved modified type of construction from that shown in my copending application, Ser. No. 351,966, .filed Jany. 16th, 1920.

A feature of the present invention consists in the provision made for the more effective self-oiling of the operable mechanism. To this end the gear casing is pro vided with an oil sump, the means for conveying oil from the sump to the working parts being of improved and novel construction.

A further feature of the'present invention consists in a novel construction and arrangement of the crank mechanism whereby the thrust of the pitman on the upstroke is directly, or substantially so, under the load, thus making the full force of the power effective on thework.

In the general design of the improved power head due consideration has been given to simplicity of constructlon and durability and dependability of operation. The

mechanism can .be produced and maintained at relatively low cost and W111 be hlghly effective under all the usual conditions of operation.

. In the accompanying drawings, Figure 1 is a vertical sectional view taken on the line 1-1 of Fig. 2; and

Fi 2 is a cross sectional view taken on the line 2-2-of Fi 1'.

As here shown the power head casing consists of the lower gear casing 1 which is pref-, erably cast integrally an'd serves as the base for the apparatus and as an oil sump for the self-oiling mechanism. The n per portion 2 of. the gear casing is cylin rical-shaped and is adapted to be bored to a given di mension to receive and act as a guide for the pitman head or operating sleeve 3. The casing 1 is rovided with a suitable aperture, norma ly closed bya coverplate 4, whereby the gear mechanism of the power walls of the casing 1.

ends, the outer end of t head may be introduced and assembled in the casing. The casing also has an aperture 5 a.rranged in the upper portion 2 and of suitable length to accommodate the stroke of the pitman-head 3, an arm 6 of the pitman head extending through the aperture to afford suitable means of connection for a pump or other mechanism to the power head. a

The actuating gear may be'of any suitable character for an apparatus of this character. As here shown the mechanism consists of a crank gear 7, mounted on a shaft.8 having bearm s 9 inthe opposite he ends of the shaft are lIlOlOSGd in opposite bearing sleeves 10 which contact with the lgear 7 at their inner e sleeves having secured thereto, preferably integral with the sleeve, a bearing ca plate 11 by means of a which the sleeves may be secured to the gear casing in the usual manner.

The gear 7 is actuated by a pinion 12 which is secured to a shaft 13, mounted in suitable hearings in the gear casing and having one or both of its ends extending beyond thev gear casing, whereby any suitable connectlon may be made to an en ine or motor for operating the power-head The crank gear 7 may have secured thereto in any suitable manner connections for operating the pitman head 3. As here shown the connection consists of a pitman 14 which is operably secured to-the crank gear by the usual form of eccentric mechanism consisting of the wrist or disk 15 and wrist strap 16, the working relation of the parts bein maintained bya retaining ring plate 17 w ich coii crates with a flange 18, extending outwardly from the face of the gear 7 to incase the eccentric mechanism.

The opposite end of the pitman is connected to the sleeve 3 b pin 19 having opposite ii in the wall of the sleeve, the inner opposite faces of the bearings, ashere shown serving as'cheek plates to maintain the pitman connection centrallyof the wrist pin.

means of a wristearings 20 and 21 thrust of the pitman on the working stroke thus being direct on the load carried by the -pitman head, the maximum power being 1. Thus with the travel of the arts through the sump the oil will be carrie upwardly to all parts of the working mechanism and self-oiling thereof will be effected. It will.

be observed that the lower end of the sleeve 3 is continuously submerged in 011. The up and down travel ofthe sleeve will thus act to carry oil to all parts of the inner surface sum of the cylinder 2, the excess oil flowing over the upper edge of the sleeve 3 to the pitman bearing shaft 19 and thence back to the The power head as here shown is connected to a deep well pump mechanism but no novelty is claimed in this connection, the

novel construction, shown constituting part of the subject matter of the oo-pending application for patent above referred to.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

1. In a power head, the combination, with a gear casing having an oil sump in the lower portion thereof and a cylindrical guide extending upwardly therefrom, of a cylindrical pitman-head operable in said guide and sump and having an operating connection extending outwardly from said casing,- and an aperture open to the actuating mechanism of the power head, said mechanism consisting of a crank gear supported in the lower part of-said casing, and

a pitman connecting said gear to the pitman head through said aperture.

2. In a power head, the combination, with a gear casing having anoil sump in the lower portion thereof and a cylindrical guide extending upwardly therefrom, ofa cylindrical pitman-head operable in said guide and sump and having an operatin connection extending outwardly from sai casing, and an aperture open to the actuating mechanism of the power head, said mechanism consisting of a crank gear supported in the lower part of said casing and operable in said aperture, and a pitman con-. necting .said gear tothe pitman-head throuIgh said aperture. 3. n a power head, the combination, with a gear casing having an oil sum in the lower portion thereof and 9. cy indrical guide extending (upwardly therefrom, of a cylindrical pitman-head operable in said guide and sump and having an aperture open to the actuating mechanism of the power head, said mechanismconsisting of a crank gear supported in said lower casln a pitman connected to the crank gear, an to the pitman-head through said aperture, said connection to the gear being adapted to intersect the plane of movement of the pitman head on the up-stroke of the power-head.

4. In a power head, the combination, with a gear casing having an oil sump in the lower-portion thereof and a cylindrical guide extending upwardly therefrom, of a cylindrical pitman-head operable in said guide and sump and having an aperture open to the actuating mechanism of the power head, said mechanism consisting of a crank gear supported in said lower casin a pitman connected to the crank gear, and to the pitman-head through said aperture, said connections being substantially ,in vertical alinement during part of the upstroke of the power-head, whereby the thrust of the pitman will be direct on the pitman head.

5. In a power head, the combination, with a lower base casing and a guide extending upwardly therefrom, said guide having an elongated slot therein, of a pitman-head operable in said guide, havingan o crating arm coiiperating with said slot, an an aperture open to the actuating mechanism of the power head, a crank gear having its center of rotation outside the plane of movement of said pitman-head, a pitman connected to said gear and head and operable through said aperture, its connection with the gear intersecting said lane of move ment at times whereb the pitman will be in substantially vertical alinement with the pitman-head.

6. In a power head, the combination, with a base casing having an oil sump therein and comprising a cylindrical guide extending upwardly from the base casing and having a slot opening through said casing, of a pitman-head operable in said guide and cooperating with the oil sump, having an arm operable through said slot and an aperture open to the actuating mechanism of the power head, said mechanism consisting of a crank gear operable in said aperture, and a pitman connecting said pitman-head and gear through said aperture, said connection to the gear being eccentric and adapted to intersect the plane of movement of the pitman-headon the up-strokeof the powerhead.

In testimony whereof I aflix my si nature.

PHILIP A. MY ERS. 

